Watch repairman&#39;s work holder



c. MO'NGELLI 2,677,292

WATCH REPAIRMAN'S WORK HOLDER Filed July 3l, 1952 May 4, 1954 .T7/Ilma m Z0 9 /0 Z0 \9\/a A 2a y /a n// Cher/Zes Man eZZL INVENTOH z l l l// 1 Y d 1 ATTOHNEYS Patented May 4, 1954 lTED STATES PATENT OFFICE 2 Claims.

This invention relates to a watch repairmans movement holder, designed for supporting watch movements while they are undergoing repair, the holder being so constructed and arranged that watch movement while secured in the movement holder .for the purpose or" repair, may be readily secured in the clamp of the usual electric timing machine, eliminating the necessity of removing the watch movement from the holder, in order to mount the watch movement for test in the machine, as is necessary with work holders of well known lconstruction.

An important object of the invention is to provide a work holder or movement support having an adjustable clamp which is quick acting, and one which will securely hold. the watch movement in the holder against accidental displacement, while the watch movement is undergoing repair.

Still another object of the invention is to provide a movement holder including a clamp which may be operated to move the movable jaw to its clamping or released position by manually gripping the movable jaw and sliding the movable jaw towards or away from the stationary jaw as required, novel means being provided for securthe movable jaw in its positions of adjustment.

Another important object of the invention is izo provide a securing means which will, after the :initial movement of the movable jaw to its clamping position, operate to move the movable jaw further into close contact with the watch movement to securely grip the watch movement.

With the foregoing and other objects in view which will appear as the description proceeds, the invention consists of certain novel details construction and combinations of parts hereinafter more fully described and pointed out in the claims, it being understood that changes may be made in the Iconstruction and arrangement of parts without departing from the spirit of the invention as claimed.

Referring to the drawing,

Figure 1 is an elevational View illustrating a wort; or movement holder constructed in accordance with the invention as mounted in the clamp of the usual testing or timing machine.

2 is an elevational view taken at right angles to Fig. l.

Fig. 3 is a plan view of the watch movement holder showing the jaws as in their open positions.

Fig. 4 is a sectional view taken on line ft-li of Fig. 3.

(Cl. 8l-6) 2 Fig. 5 is a sectional view taken on line 5-5 of Fig. 4.

Fig. 6 is a sectional View taken on line 6 6 of Fig. 5.

Fig. 7 is a fragmental sectional view taken approximately on line 1 1 of Fig. 5.

Fig. 8 is a fragmental sectional view illustrating the gripping member of the clamp as moved to its gripping position to hold the movable jaw in its adjusted position.

Fig. 9 is a fragmental sectional view illustrating the position of the operating shaft and locking disc when the operating shaft has been moved to its nal position in securing the movable jaw against the watch movement.

Referring to the drawing in detail, the watch movement holder comprises the elongated body 5 which is formed with parallel bores 5 and 'l extending throughout the length thereof, the bore 'I communicating with the enlarged cut out portion 3 disposed adjacent to one end thereof in which the clamping disc 9 is mounted.

The coiled spring IE is also mounted within the cut out portion 8 and has one of its ends resting against the clamping disc 9, as clearly shown by Fig. 5 of the drawing, while the opposite end of the coiled spring is seated in the recess i i formed in one end of the cut out portion.

One edge of the body portion 5 is shaped to provide a curved jaw l2 which cooperates with the movable jaw i3, the movable jaw being secured to the outer ends of the supporting rods it and l5 which move in the bores 6 and 'l holding the movable jaw I3 in proper alignment for gripping a watch movement.

The reference character i5 indicates the clamping disc operating shaft, which extends transversely through the elongated body, directly under the stationary or curved jaw l2, the operating shaft i5 being disposed laterally of the supporting rods, as shown by Fig. 6 of the drawing. The operating shaft i6 is formed with the annular groove il through which the supporting rod iii moves, providing a clearance for the supporting rod lll, and at the same time providing means to prevent accidental displacement of the operating shaft it. The shaft I5 is also formed with the oliset portion it that provides a cam that contacts with the clamping disc at one side of the supporting rod i5, on which the disc is mounted. 1t is to be understood that the opening through the disc 9 is slightly larger than the diameter of the supporting rod I5 on which it is mounted, to permit the clamping disc to rock on said rod 3 I5, for purposes to be hereinafter more fully described.

The clamping disc operating shaft I6 is provided wth a knurled finger piece I9 which is disposed exteriorly of the elongated body, the finger piece aiording means whereby the shaft I6 may be rotated.

The elongated body is provided with a bore extending inwardly from the end of the body directly under the stationary clamping jaw, which bore accommodates the threaded adjusting screw 20, which is of a length to extend a substantial distance into the cut out portion 8 where it will engage one edge of the clamping disc 9 to hold the disc 9 in position so that the rod I5 may slide therethrough. It will of course be understood that with the adjusting screw in the position as shown by Fig. 7 of the drawing, the portion of the clamping disc directly opposite to the point of contact of the disc and adjusting screw, will be engaged by the operating shaft. When the ,operating shaft is rotated from the position as shown by Fig. 7, to the position as shown by Fig. 8, it is obvious that the clamping disc will be tilted causing edges of the opening of the clamping disc to bite into the supporting rod I5 clamping the disc 9 and rod I5 together. Upon further movement of the operating shaft I6, the offset portion of the operating shaft will move to urge the supporting rod I5 inwardly, causing the movable jaw i3 to securely clamp the Watch movement which is positioned between the jaws of the clamp.

To release the Watch movement, it is only necessary to operate the shaft I6 to permit the coiled spring to bias the clamping disc towards the operating shaft I6 whereupon the side faces of the clamping disc assume positions at right angles to the longitudinal axis of the supporting rod Iii, and the rod I5 and rod Ili will be free to move the movable jaw I3, With respect to the stationary curved jaw I2 for either clamping or releasing the Watch movement.

From the foregoing it will be seen that I have provided a watohmakers movement holder which may be used in clamping a'watch movement While it is being repaired, the movement holder being of such a construction that it may be bodily clamped Within the usual clamp, which in the present showing is indicated by the reference character 2l, the clamp 2l providing the usual clamping means for clamping Watch movements in their cases, in electric timing machines.

Having thus described the invention, what is claimed is:

1. A removable adapter for a watch movement testing machine, comprising a body, a watch movement clamp on the body, said clamp embodying a stationary jaw and a movable jaw, said body having parallel bores extending longitudinally therethrough, a pair of spaced parallel rods to which said movable jaw is secured, operating within said bores, one of said bores having an enlarged cut out portion, a clamping disc having a central opening, through which one rod extends, mounted Within the cut out portion, a spring mounted Within the cut out portion on one of said rods, engaging the clamping disc tilting the clamping disc clamping the rod on which thc disc is mounted, a stop extending into said cut out portion against which said disc engages restrict-- ing tilting movement of the clamping disc, an operating shaft extending transversely through the cut out portion, said operating shaft having an annular groove through which one of said parallel rods moves, holding said operating shaft within said clamp body, an oiset portion movable into contact with the clamping disc at a point opposite to the point of contact beween the stop and disc, normally holding said clamping disc in a position with the side faces thereof disposed at right angles to the longitudinal axis of the rod on which the clamping disc is mounted, and said operating arm adapted to move the clamping disc clamping the rod on which said clamping disc is positioned moving the rod and jaw carried thereby in clamping a Watch movement.

2. A removable adapter for a watch movement testing machine, comprising a body, a clamp disposed at one edge of the body, said clamp embodying a movable jaw and a stationary jaw, said body having parallel bores extending longitudi nally therethrough, a pair of rods to which the movable jaw is secured, an operating shaft exu tending transversely through said body, having an annular groove for the reception of one of said rods, holding said operating shaft Within said bores, against accidental displacement means disposed Within one of said bores contacting with one of said rods, for securing said rods and mov-- able jaw in various positions of adjustment, said means embodying an apertured tiltable disc mounted on one of said rods, and an olset portion formed on said shaft engageable with said disc, tilting said disc into clamping relation with said rod.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,261,055 Dulaney Oct. 28, 1941 2,362,067 Heinrich Nov. 7, 1944 2,549,325 Mongelli et al Apr. 1'7, i951 FOREIGN PATENTS Number Country Date 109,336 Switzerland Apr. 1, 1925 

